ul,li,body{
    padding: 0;
    margin: 0;
}
a{
    text-decoration: none;
}
header h1{
    font-family: "微软雅黑";
    font-weight: normal;
    text-align: center;
    height:49px;
    box-shadow: 0px 2px 3px #000;
}
.main .center-nav ul li.item{
    float: left;
    width: 20%;
    text-align: center;
}
ul{
    list-style-type: none;
}
.main .center-nav ul li.item img{
    margin-bottom: 5px;
    margin-top: 5px;
}
.urls-nav .urls{
    border-bottom: 1px solid #ccc;
}
.urls-nav .urls li.url{
    float: left;
    width: 20%;
    text-align: center;
    height: 45px;
    line-height: 45px;
}
.urls-nav .urls li.url a{
    color: black;
    text-decoration: none;
}
.urls-nav .urls li.url.stro a{
    color: #aaa;
}
.footer-nav{
    background: #333;
}
.footer-nav ul li{
    float: left;
    height: 32px;
    width: 50px;
    text-align: center;
    line-height: 32px;
}
.footer-nav ul li a{
    color: white;
}
.footer-nav ul{
    width: 250px;
    margin: 0 auto;
}
p{
    text-align: center;
    color:#948a8a;
}